1 ; RUN: opt -O2 %s | llvm-dis > %t1
2 ; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
3 ; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
5 ; struct v1 {int a; int b;};
6 ; typedef struct v1 __v1;
7 ; typedef __v1 arr[4][4];
8 ; struct v3 { char c; int d[100]; };
9 ; #define _(x) (__builtin_preserve_access_index(x))
10 ; #define cast_to_arr(x) ((arr *)(x))
11 ; int get_value(const int *arg);
12 ; int test(struct v3 *arg) {
13 ; return get_value(_(&cast_to_arr(&arg->d[0])[0][2][3].b));
16 ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
20 %struct.v3 = type { i8, [100 x i32] }
21 %struct.v1 = type { i32, i32 }
23 ; Function Attrs: nounwind
24 define dso_local i32 @test(ptr %arg) local_unnamed_addr #0 !dbg !24 {
26 call void @llvm.dbg.value(metadata ptr %arg, metadata !34, metadata !DIExpression()), !dbg !35
27 %0 = tail call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.v3) %arg, i32 1, i32 1), !dbg !36, !llvm.preserve.access.index !28
28 %1 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([100 x i32]) %0, i32 1, i32 0), !dbg !36, !llvm.preserve.access.index !15
29 %2 = bitcast ptr %1 to ptr, !dbg !36
30 %3 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x [4 x %struct.v1]]) %2, i32 0, i32 0), !dbg !36, !llvm.preserve.access.index !4
31 %4 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x [4 x %struct.v1]]) %3, i32 1, i32 2), !dbg !36, !llvm.preserve.access.index !5
32 %5 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x %struct.v1]) %4, i32 1, i32 3), !dbg !36, !llvm.preserve.access.index !18
33 %6 = tail call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.v1) %5, i32 1, i32 1), !dbg !36, !llvm.preserve.access.index !8
34 %call = tail call i32 @get_value(ptr %6) #4, !dbg !37
35 ret i32 %call, !dbg !38
42 ; CHECK: call get_value
44 ; CHECK: .long 1 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
45 ; CHECK: .long 100 # BTF_KIND_STRUCT(id = [[TID2:[0-9]+]])
47 ; CHECK: .ascii "v3" # string offset=1
48 ; CHECK: .ascii ".text" # string offset=46
49 ; CHECK: .ascii "0:1:0" # string offset=52
50 ; CHECK: .ascii "v1" # string offset=100
51 ; CHECK: .ascii "11:1" # string offset=107
53 ; CHECK: .long 16 # FieldReloc
54 ; CHECK-NEXT: .long 46 # Field reloc section string offset=46
56 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
57 ; CHECK-NEXT: .long [[TID1]]
58 ; CHECK-NEXT: .long 52
60 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
61 ; CHECK-NEXT: .long [[TID2]]
62 ; CHECK-NEXT: .long 107
65 declare dso_local i32 @get_value(ptr) local_unnamed_addr #1
67 ; Function Attrs: nounwind readnone
68 declare ptr @llvm.preserve.struct.access.index.p0.p0(ptr, i32, i32) #2
70 ; Function Attrs: nounwind readnone
71 declare ptr @llvm.preserve.array.access.index.p0.p0(ptr, i32, i32) #2
73 ; Function Attrs: nounwind readnone
75 ; Function Attrs: nounwind readnone
77 ; Function Attrs: nounwind readnone
79 ; Function Attrs: nounwind readnone
81 ; Function Attrs: nounwind readnone speculatable willreturn
82 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
84 attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
85 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
86 attributes #2 = { nounwind readnone }
87 attributes #3 = { nounwind readnone speculatable willreturn }
88 attributes #4 = { nounwind }
91 !llvm.module.flags = !{!20, !21, !22}
94 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
95 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
97 !3 = !{!4, !15, !5, !18}
98 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
99 !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "arr", file: !1, line: 3, baseType: !6)
100 !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 1024, elements: !13)
101 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v1", file: !1, line: 2, baseType: !8)
102 !8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v1", file: !1, line: 1, size: 64, elements: !9)
104 !10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !1, line: 1, baseType: !11, size: 32)
105 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
106 !12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !1, line: 1, baseType: !11, size: 32, offset: 32)
108 !14 = !DISubrange(count: 4)
109 !15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !11, size: 3200, elements: !16)
111 !17 = !DISubrange(count: 100)
112 !18 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 256, elements: !19)
114 !20 = !{i32 2, !"Dwarf Version", i32 4}
115 !21 = !{i32 2, !"Debug Info Version", i32 3}
116 !22 = !{i32 1, !"wchar_size", i32 4}
117 !23 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
118 !24 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 8, type: !25, scopeLine: 8, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !33)
119 !25 = !DISubroutineType(types: !26)
121 !27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
122 !28 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 4, size: 3232, elements: !29)
124 !30 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !28, file: !1, line: 4, baseType: !31, size: 8)
125 !31 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
126 !32 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !28, file: !1, line: 4, baseType: !15, size: 3200, offset: 32)
128 !34 = !DILocalVariable(name: "arg", arg: 1, scope: !24, file: !1, line: 8, type: !27)
129 !35 = !DILocation(line: 0, scope: !24)
130 !36 = !DILocation(line: 9, column: 20, scope: !24)
131 !37 = !DILocation(line: 9, column: 10, scope: !24)
132 !38 = !DILocation(line: 9, column: 3, scope: !24)